Executive summary

Site investigation is the process by which ground engineering professionals such as geotechnical engineers, engineering geologists, and geoenvironmental engineers and scientists obtain information on the ground beneath sites that are to be developed. Failure to carry out a good site investigation can put project viability at risk, affecting

This document provides an introductory guide to accepted best practice for site investigations, not only for construction professionals such as civil and structural engineers, builders and architects, but also for their clients. It has been prepared under the supervision of the Site Investigation Steering Group, a multi-disciplinary ad hoc body representing those professional institutions, learned societies, trade organisations and government agencies involved in or affected by site investigations.